/**
 * This callback type is called `requestCallback` and is displayed as a global symbol.
 *
 * @callback requestCallback
 * @param {number} responseCode
 * @param {string} responseMessage
 */

/**
 * Does something asynchronously and executes the callback on completion.
 * @param {requestCallback} cb - 处理响应的回调
 * @param {Object} cb - 处理响应的回调
 */
function doSomethingAsynchronously(cb) {
	// code
};